The analysis of tools selection for broadband ISP
NAT444, DS-LITE, 6RD and other transition technologies have been well done, the ISP should select the most suitable tool to meet the requirements of a typical broadband access network in the real world regarding its network architecture, operation situation and transition goals, etc. According to the mainstream broadband access network, this draft focuses on analyzing the problems that may be encountered when using various transitional technologies during the transition and finally introduces a more systematic and operational proposal.